Shoe-lasting machine



(No Model.) 2 Sheets-Sheet 1.

A. S. LIBBY.

SHOE LASTING MAGHINE.

No. 317,384. jPa ent dMay 5,.1885.

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N. FETERS. Pmxo-uzmgn l-mr. Washington. D. c.

(No Model.) I 2 Sheets-Sh,eet 2.

A. s. LIBBY. 4

SHOE LASTING MACHINE. No. 317,384.- Patented May 5, 1885.

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UNITED STATES PATENT OFFICE.

ASA S. LIBBY, OF EVERETT, ASSIGNOR TO THE REAL LASTING MACHINE COMPANY,OF, BOSTON, MASSACHUSETTS.

SHOE-LASTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 317,384, dated May 5,1885.

Application filed August 7, 1884. (N model.)

570 aZZ whom it may concern:

Be it known that I, ASA S. LIBBY, a citizen of the United States,residing at Everett, in the county of Middlesex and State ofMassachusetts, have invented certain new and useful Improvements inShoe-Lasting Machines, of which the following is a specification,reference being had therein to the accompanying drawings.

My invention relates to improvements in shoe-lasting machines.

The object of my invention is to produce a lasting-machine in which thereciprocating lasting-jaws, which close in to fold the vamp down overand onto the last at different or successive periods of time, areoperated from a continuously-rotating shaft, or from a shaft adapted tobe continuously rotated in one direction; and my invention is made withspecial reference to the patent granted Ezra F. Beal, May 15, 1883, N o.27 7 ,664, reissued February 26, 1884, No. 10,454.

My invention consists in connecting the clutch-which engages with theeccentrics to a cam-faced wheel, whereby the clutch is automaticallyshipped from one eccentric to the other to operate the different jaws.

My invention consists, further, in certain novel devices for operatingthe lastsupport, as will more fully appear.

Referring to the drawings, Figure 1 is a vertical sectional view showingthe cam-wheel for operating the clutch. Fig. 2 is a vertical sectionallongitudinal view. Fig. 3 is a top or plan view of the Beal machineabove referred to and as shown in Fig. 2 of his patent. Fig. 4 is a sideview showing the hanger or clutch operating mechanism which engages withthe cam-slot in the cam-wheel.

The main features of the machineviz., the reciprocating slotted frame A,opening and closing side and toe jaws, B O, pitman D, cocentrics E andF, shaft G, and all the mechanism shown in Fig. 3 of the drawings-areidentical with the machine as constructed under the Beal patent abovereferred to. In that patent, however, the toe and side jaws are operatedby a pitman the eccentric of which is brought into engagement with aclutch, while 50 to operate the pitman which moves the side toe and sideheel jaws the clutch had to be shipped by hand to engage with thelast-mentionedpitman, thus causing unnecessary delay in the lasting of ashoe.

' By the devices embraced in this application the shipping of the clutchfrom one eccentric to the other is done automatically, as will now bedescribed in detail.

H is a shaft mounted in suitable bearings in the frame, directlyunderneath and parallel with the shaft G, and receives motion therefromby means of the pinion-wheels I and K.

L is a wheel or disk secured to the shaft H, in the periphery of whichis formed a camgroove to receive a friction-wheel, N, secured to the endof the yoke O, which embraces the clutch P, said yoke being hung to anarm, R, secured to the frame of the machine in such a manner as to admitof the yoke swinging back and forth with the clutch. The yoke O isprovided on its inside with pins, which engage with a groove formed inthe periphery of the clutch.

It will be noticed that by the action of the camgroove M on the yoke Othe clutch will be thrown into and out of engagement alternately withthe eccentrics, and thus bring into action first the side and toe jaws,B O. The clutch will then be automatically shipped to engage with theeccentric F to bring into action the side toe and side heel jaws.

T is the heelsupport for the last, the lower end of which passes througha bracket, U, secured to the side pieces, V, said side pieces beingsecured to the cross-piece W of the frame of the machine. The sidepieces, V, are provided with diagonal tongues a, which fit into diagonalgrooves bin the sliding block B. The sliding block B is provided with anopening, 0, through which the lower end of the jointed standard 0 of theheel-support passes, said standard being provided with a collar, d,which rests on the top of the sliding block B.

D is a bell-crank lever pivoted at e to a bracket, f, said bracket fbeing firmly secured to the frame of the machine.

E is a rod or bar, one end of which is secured to the bell-crank leverD, the other end being secured to the sliding block B.

It will be noticed that when the operator I jaws forward and backward inalternate seplaces his foot on the arm 9 of the'bell-crank lever andforces it downward the sliding block B will be drawn forward upon theinclined tongues a, and thus the bar 0, with the last and shoe-vampthereon, will be raised up, so that the clamping or crimping jaws of themachine will act on the vamp to crimp it down over the edges of thelast. A reverse movement of the bell-crank lever will slide the block Brearward, and thus lower the rod 0 and last.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 18-

1. In a shoe-lasting machine, the combina' tion, with the crimping-jaws,the" eccentrics, jaw-actuating mechanism, and the continuously-rotatingshaft, of the clutch and camwheel, whereby the clutch is automaticallyshifted to operate the mechanism to thrust the ries, substantially asspecified.

2. The combination, with the clampingjaws, the eccentrics, anddriving-shaft, of the shipping-clutch and its yoke suspended from ahanger, the friction-wheel mounted at the lower end of the yoke, and thecam-wheel mounted on an independent shaft, and the intergearingcog-wheels, whereby the parts are operated automatically, as set forth.

3. In a shoe-lasting machine, the bell-crank lever D, pivoted to themachine, and pitman or arm E, connected to the sliding block B, asdescribed, in combination with the standard 0, as set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

ASA S. LIBBY.

Witnesses:

W. E. RoGERs,

GILBERT O. BURNHAM.

